<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var flag = true;  // 布尔类型
			var obj1 = null; //空对象
			var x;  //未初始化x=undefined
			var num1 = 1;
			var num2 = 1/0;
			var num3 = 0/0;
			var str = "pzhu";
			var obj2 = {}; //对象
			var fun = function(a){}; //函数
			var fun = function(a,b){}; //函数
			var fun = function(a,b,c){}; //函数
			
			console.log( typeof flag);
			console.log( typeof obj1);
			console.log( typeof x);
			console.log( typeof num1);
			console.log( typeof num2);
			console.log( typeof num3);
			console.log( typeof str);
			console.log( typeof obj2);
			console.log( typeof fun);
			
			
			
		</script>
		
	
		
	</body>
</html>
